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2 definitions found
 for picture element
From WordNet (r) 3.0 (2006) :

  picture element
      n 1: (computer science) the smallest discrete component of an
           image or picture on a CRT screen (usually a colored dot);
           "the greater the number of pixels per inch the greater the
           resolution" [syn: pixel, pel, picture element]

From The Free On-line Dictionary of Computing (18 March 2015) :

  picture element
      (pixel) The smallest resolvable rectangular area of
     an image, either on a screen or stored in memory.  Each
     pixel in a monochrome image has its own brightness, from 0
     for black to the maximum value (e.g. 255 for an eight-bit
     pixel) for white.  In a colour image, each pixel has its own
     brightness and colour, usually represented as a triple of red,
     green and blue intensities (see RGB).
     Compare voxel.

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